Abstract
New heteroleptic iron complexes mixing a terpyridine bearing a protonable pyridyl substituent (pytpy) and a pyridyl carbene ligand (carb) have been prepared and characterised by UV/Vis spectroscopy, cyclic voltammetry and TD-DFT computations. The absorption spectrum of [Fe(carb)(pytpy)]2+ showed a notable redshift compared with the homoleptic [Fe(carb)2] 2+ complex. The MLCT transition occurred at even lower energy when the pendant pyridine was protonated, leading to a wide absorption domain in the 450-650 nm range. Calculations revealed the strong propensity of excited electrons to move from the metal to the pytpy ligand in the complex. This new family of complexes is a promising addition to the arsenal of iron-based chromophores with tuneable electronic properties.
Original language | English |
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Pages (from-to) | 3747-3753 |
Number of pages | 7 |
Journal | European Journal of Inorganic Chemistry |
Issue number | 23 |
DOIs | |
Publication status | Published - 2014 |
Keywords
- Carbenes
- Chromophores
- Iron
- N ligands
- Photophysics
- Tridentate ligands